Ventilator.



F. H. FLOWERS & F. -R. LEET. VBNTILATOB.

APPLICATION rum) MAR. 16, 1908.

91 5,838. Patent-d Mar. 23, 1909.

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FItANK H. FLGWERS ANI) FRANK LEET, OF ERIE, PENNSYLVANIA; SAID FLOWERSASSIGNOR TO SAID LEET.

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Specification of Letters Patent. Patented March 23, 1909.

' Application filed March 16, 1908. Serial No. 421,475.

The object of the invention is to provide a' ventilator suitable for usewith window frames, inserted rails, or in fact any closure in which itis desirable to have a ventilator The invention is illustrated in theaccompanying drawings as follows:

Figure 1 shows a perspective view of a fragment of a window with theventilator in place therein. Fig. 2 a central vertical section of theventilator and window frame. Fig. 3 an end view of the ventilator. Fig.4 a perspective view of the closure plate of the ventilator. Fig. 5 aperspective view of a fragment of the base. plate of the ventilator.

1 marks the rail or frame of the window. As shown this is part of ti 1.6window, but it will be understood that this may be any part of thebuilding through which the ventilator opening may be arranged.

The base late 2 of the ventilator has the aperture 3 w iich limits thesize of the ventilator opening. At each end of the aperture 3 theplat-r; 2 has a lug 4 formed in it, and this lug or earis bent to rightangles to the plate 2 forming a lug or ear at each end of the apertureThe perforations 5 are arranged in the lug, and receive the hinge pin orrivet for the closure plate 7. The base late is also provided with theperforations 6 y means of which it may besecured to the rail or otherstructure.

The closure plate 7 has the end plates 8.

These are bent at right angles to the plate 7 and extend through theaperture 3 forming closures at the ends. They are provided with theperforations 9 which come into register with the perforations 5 on theears 4, and the hinge pins. 10 extend through the perforations 5 and 9forming hinge pins for the closure plates 7.

l The ends 8- have the indentures 11 ar- 1' ranged in an arc with theperforation 9 as a center. The cars 4 havethe upper extensions. 12, andthe pawl 13 which are adapted to operate in the detents 11 on the ends8. The pawl 13 is spring actuated by reason of the extensions 12, and isso shaped as to yieldingly enter the detents 11 to lock the closureplate in any adjustment desired. The engagement of the pawls, however,is

i not sufficient to prevent a ready movement of the closure if it isdesired to close or open it. This engagement is, however, sufficient toprevent any rattling of the ventilator which is quite objectionable withsome constructions.

It is desirable to have an overlapping closure when the plate is in aclosed position. In order to accomplish this, we have the lip 14extending along the bottom of the closure plate 7. It projectsinwardlyenough to enthe plate 7 flush with the outer face of the plate What weclaim as new is:

1. In a ventilator, the combination of an apertured base plate; aswinging closure plate hinged on the base plate, and having the closureends thereon extending through the aperture; and locking meanscomprising ingly locking the same at various positions.

base plate having an aperture therein; a closure platehinged on the baseplate, said closure plate having its body flush with the surface of thebase plate when closed; and having a lip 14 projecting out of the planeof the closure plate for engaging the opposite surface of the base latewhen the closure plate is closed, said ip extending the entire ength ofthe aperture to form a closure therewith.

In testimony whereof we have hereunto set our hands in the presenceof'two subscribing witnesses.

FRANK H. FLOWERS.

FRANK R. LEET.

Witnesses:

H. L. LORD, K. R.,KANE.

gage the inner side of the base plate 2 with detents on said ends, and.spring actuated pawl yleldingly engaging said ends for yield- 85v 2; Ina ventilator, the combination of a.

